Heat Conduction, including: Péclet Number, Thermal Diffusivity, Thermal Conductivity, Conduction (heat), Heat Equation, Biot Number, Heat Transfer, ... Heat Kernel, Thermal Contact Conductance

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More info: In heat transfer, conduction (or heat conduction) is the transfer of thermal energy between neighboring molecules in a substance due to a temperature gradient. It always takes place from a region of higher temperature to a region of lower temperature, and acts to equalize the temperature differences. Conduction takes place in all forms of matter, viz. solids, liquids, gases and plasmas, but does not require any bulk motion of matter. In solids, it is due to the combination of vibrations of the molecules in a lattice and the energy transport by free electrons. In gases and liquids, conduction is due to the collisions and diffusion of the molecules during their random motion. Heat can also be transferred by radiation and/or convection, and often more than one of these processes occurs in a given situation.